Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bef5ff4b9fcdaf8…

MALICIOUS

PDF

56.7 KB Created: 2021-09-19 08:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 2bb9590c31e4c45545c887f04a7b14c8 SHA-1: adbbbaea52d33e2927c5ce417b45982a357e6879 SHA-256: 6bef5ff4b9fcdaf87fbed4bd5d836e07f4af68a81bf9e824d8e7cd23f87eedd0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a link farm, a common technique for distributing malicious content or conducting phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6236

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://s-h.cc/uploads/files/202109161945169705.pdf In PDF document text
    • https://sledovani.gpshlidac.cz/www/userfiles/files/ruxisagewikidideseferugi.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/38134023127.pdfIn PDF document text
    • http://dzirerealtors.com/uploads/somoxamikizovelamufet.pdfIn PDF document text
    • https://hsdinstruments.nl/uploads/files/nixopomugilebinoxis.pdfIn PDF document text
    • http://nieruchomosciklodzko.pl/files/file/70481630692.pdfIn PDF document text
    • https://bibonatura.com/ckfinder/userfiles/files/94185384553.pdfIn PDF document text
    • http://keramann.ru/uploads/files/97323971143.pdfIn PDF document text
    • https://taxfirma.com/userfiles/file/96929005633.pdfIn PDF document text
    • http://turinhotelcompany.com/userfiles/files/riromita.pdfIn PDF document text
    • http://tfforming.ru/d/files/19285195922.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/refapetatoze.pdfIn PDF document text
    • https://www.aaptuk.org/ckfinder/userfiles/files/84681199039.pdfIn PDF document text
    • http://fillaracingacademy.cz/ckfinder/userfiles/files/zipuwo.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/bc2534e84fb635054957f08226b56215/nufisukidovawinuxibunoga.pdfIn PDF document text
    • http://eko-baby.ru/userfiles/file/vidixu.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/livalimexekurobewutajara.pdfIn PDF document text
    • https://zevkotodoseme.com/upload/ckfinder/files/65058718356.pdfIn PDF document text
    • https://biographiewerkstatt-singer.de/userfiles/file/73542165164.pdfIn PDF document text
    • https://unifor975.ca/userfiles/file/tivudarazesexapakigebuzo.pdfIn PDF document text
    • http://ajej.pretty-match.com/upload/files/vomadujoturoxadonozi.pdfIn PDF document text
    • http://apisicul.com/userfiles/files/dororazi.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/58740775526.pdfIn PDF document text
    • http://jinwoosmc.com/userfiles/file/pedibafediravutotefujezaw.pdfIn PDF document text
    • http://saharun.org/uploads/ckfinder/userfiles/files/bexejinuxajelofapesepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=android+sur+iphone+4PDF link annotation